// png fix
Prototype.Browser.Version = (navigator.userAgent.toLowerCase().match( /.+(?:rv|it|ra|ie)[\/: ]([\d.]+)/ ) || [])[1];
Prototype.FixPNG = { Pixel: '/img/n-i/pixel.gif' };

Element.addMethods({
  fixpng: (Prototype.Browser.IE && Prototype.Browser.Version < 7) ? function(element) {
    function fixPosition(element) { if(element.style.position != 'absolute') element.style.position == 'relative'; }
    function filter(src) { return "progid:DXImageTransform.Microsoft.AlphaImageLoader(enabled=true,sizingMethod=crop,src='" + src + "')"; }
    var elementName = element.nodeName.toLowerCase();
    if(elementName == 'img' || elementName == 'input') {
      if(element.src && element.src.match(/.*\.png([?].*)?$/i)) {
        element.setStyle({
          filter: filter(element.src),
          width: element.getWidth(),
          height: element.getHeight()
        });
        element.src = Prototype.FixPNG.Pixel;
        fixPosition(element);
      }
    } else {
      var image = element.currentStyle.backgroundImage;
      if (image.match(/^url\(["']?(.*\.png([?].*)?)["']?\)$/i)) {
        element.setStyle({
          filter: filter(RegExp.$1),
          backgroundImage: "none"
        });
        element.children().each(fixPosition);
      }
    }
  } : function(element) {}
});